[词汇]
conductor n. 售票员
fare n. 车费，车票
change v. 兑换
note n. 纸币
passenger n. 乘客
none pron. 没有任何东西
neither adv. 也不
get off 下车
tramp n. 流浪汉
except prep. 除...外
★change v. 兑换
① v. 兑换
I want to change the pounds into dollars.
Could you change me a one-pound note, please? 能否请你换一镑的零钱给我？
② v. 改变；更改
He changed his mind at last.
This plan is to change the desert into farmland. 这个计划是要将沙漠变为农田。
③ v. 交换；改换
Shall we change our seats?
You've got to change your bus at the next stop. 你得在下一站换车。
★none pron. 没有任何东西
none代词，可与可数名词连用，也可与不可数名词连用。
None of our passengers can change this note.
none在句中通常单独使用：
I bought none. 我没买什么东西。
no形容词，在句中一般修饰别的名词
no= not...any
not否定副词
I have got some envelops.
I haven't got any envelops.
I have got no envelops.
I have got none.
★except prep. 除......外（不包括）
The shop is open everyday expect Sunday.
I like him except when he's gloomy. 除了他满脸阴沉的时候之外，我挺喜欢他。
besides prep. 除......之外（包括）
There are three girls besides two doys.